pragma solidity >=0.6.12; // Author: Louis Holbrook 0826EDA1702D1E87C6E2875121D2E7BB88C2A746 // SPDX-License-Identifier: AGPL-3.0-or-later // File-version: 4 // This is a representation of an officially approved Ethereum Improvement Proposal, written by Christian Reitwießner chris@ethereum.org, Nick Johnson nick@ethereum.org, Fabian Vogelsteller fabian@lukso.network, Jordi Baylina jordi@baylina.cat, Konrad Feldmeier konrad.feldmeier@brainbot.com and William Entriken github.com@phor.net. It was released under the CC0 license. // The proposal source used as reference was a Markdown file with the following digests: // - sha256:2fc8534206e1e5b7abbb9db21fa5b83d39c51b2dabad441a356b7d18320bfc51 interface IERC165 { function supportsInterface(bytes4 _sum) external pure returns (bool); }